Broadband Mechanically Tunable Metasurface Reflectivity Modulator in the Visible Spectrum.

ABSTRACT: Reflectivity modulation is a critical feature for applications in telecommunications, 3D imaging and printing, advanced laser machining, or portable displays. Tunable metasurfaces have recently emerged as a promising implementation for miniaturized and high-performance tunable optical components. Commonly, metasurface response tuning is achieved by electro-optical effects. In this work, we demonstrate reflectivity modulation based on a nanostructured, mechanically tunable, metasurface, consisting of an amorphous silicon nanopillar array and a suspended amorphous silicon membrane with integrated electrostatic actuators. With a membrane displacement of only 150 nm, we demonstrate reflectivity modulation by Mie resonance enhanced absorption in the pillar array, leading to a reflectivity contr

SUBMITTER: Herle D 

PROVIDER: S-EPMC10288533 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature